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SCCP Phone NAT

Hi

Here is the scenario

I want to deploy around 100 IP Phones for Home users,

All of them have ADSL Connectivity and ADSL modem with One IP Address,

The modem itself handles the NAT and gives 10 non routable IP,s to client in the LAN

The home user don?t have any Cisco router so I canned use NAT translation on SCCP in Cisco IOS command

Is it possible to install IP PHONE or ( Cisco IP Communicator ) for them?? I know we can use VPN and have a tunnel to our central office but This is not a goos solution in my Case because I want to deploy this for end user and they don?t want to have a VPN connection only for their phones

These ADSL modems are from different factors and none of them are Cisco,

So can any one help me to get rid of this NAT issue forever?

Thanks ,

Mo,

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